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<pre><code><a href="#1" id="1" class="l">  1: </a><span class="xlang">&lt;?php</span>
<a href="#2" id="2" class="l">  2: </a>
<a href="#3" id="3" class="l">  3: </a><span class="php-comment">/*
</span><a href="#4" id="4" class="l">  4: </a><span class="php-comment"> * This file is part of SwiftMailer.
</span><a href="#5" id="5" class="l">  5: </a><span class="php-comment"> * (c) 2004-2009 Chris Corbyn
</span><a href="#6" id="6" class="l">  6: </a><span class="php-comment"> *
</span><a href="#7" id="7" class="l">  7: </a><span class="php-comment"> * For the full copyright and license information, please view the LICENSE
</span><a href="#8" id="8" class="l">  8: </a><span class="php-comment"> * file that was distributed with this source code.
</span><a href="#9" id="9" class="l">  9: </a><span class="php-comment"> */</span>
<a href="#10" id="10" class="l"> 10: </a>
<a href="#11" id="11" class="l"> 11: </a><span class="php-comment">/**
</span><a href="#12" id="12" class="l"> 12: </a><span class="php-comment"> * Defines the grammar to use for validation, implements the RFC 2822 (and friends) ABNF grammar definitions.
</span><a href="#13" id="13" class="l"> 13: </a><span class="php-comment"> * @package Swift
</span><a href="#14" id="14" class="l"> 14: </a><span class="php-comment"> * @subpackage Mime
</span><a href="#15" id="15" class="l"> 15: </a><span class="php-comment"> * @author Fabien Potencier
</span><a href="#16" id="16" class="l"> 16: </a><span class="php-comment"> * @author Chris Corbyn
</span><a href="#17" id="17" class="l"> 17: </a><span class="php-comment"> */</span>
<a href="#18" id="18" class="l"> 18: </a><span class="php-keyword1">class</span> Swift_Mime_Grammar
<a href="#19" id="19" class="l"> 19: </a>{
<a href="#20" id="20" class="l"> 20: </a>    <span class="php-comment">/**
</span><a href="#21" id="21" class="l"> 21: </a><span class="php-comment">     * Special characters used in the syntax which need to be escaped.
</span><a href="#22" id="22" class="l"> 22: </a><span class="php-comment">     * @var string[]
</span><a href="#23" id="23" class="l"> 23: </a><span class="php-comment">     * @access private
</span><a href="#24" id="24" class="l"> 24: </a><span class="php-comment">     */</span>
<a href="#25" id="25" class="l"> 25: </a>
<a href="#26" id="26" class="l"> 26: </a>    <span class="php-keyword1">private</span> <span class="php-var">$_specials</span> = <span class="php-keyword1">array</span>();
<a href="#27" id="27" class="l"> 27: </a>
<a href="#28" id="28" class="l"> 28: </a>    <span class="php-comment">/**
</span><a href="#29" id="29" class="l"> 29: </a><span class="php-comment">     * Tokens defined in RFC 2822 (and some related RFCs).
</span><a href="#30" id="30" class="l"> 30: </a><span class="php-comment">     * @var string[]
</span><a href="#31" id="31" class="l"> 31: </a><span class="php-comment">     * @access private
</span><a href="#32" id="32" class="l"> 32: </a><span class="php-comment">     */</span>
<a href="#33" id="33" class="l"> 33: </a>    <span class="php-keyword1">private</span> <span class="php-var">$_grammar</span> = <span class="php-keyword1">array</span>();
<a href="#34" id="34" class="l"> 34: </a>
<a href="#35" id="35" class="l"> 35: </a>    <span class="php-comment">/**
</span><a href="#36" id="36" class="l"> 36: </a><span class="php-comment">     * Initialize some RFC 2822 (and friends) ABNF grammar definitions.
</span><a href="#37" id="37" class="l"> 37: </a><span class="php-comment">     * @access protected
</span><a href="#38" id="38" class="l"> 38: </a><span class="php-comment">     */</span>
<a href="#39" id="39" class="l"> 39: </a>
<a href="#40" id="40" class="l"> 40: </a>    <span class="php-keyword1">public</span> <span class="php-keyword1">function</span> __construct()
<a href="#41" id="41" class="l"> 41: </a>    {
<a href="#42" id="42" class="l"> 42: </a>        <span class="php-var">$this</span>-&gt;_specials = <span class="php-keyword1">array</span>(
<a href="#43" id="43" class="l"> 43: </a>                <span class="php-quote">'('</span>,
<a href="#44" id="44" class="l"> 44: </a>                <span class="php-quote">')'</span>,
<a href="#45" id="45" class="l"> 45: </a>                <span class="php-quote">'&lt;'</span>,
<a href="#46" id="46" class="l"> 46: </a>                <span class="php-quote">'&gt;'</span>,
<a href="#47" id="47" class="l"> 47: </a>                <span class="php-quote">'['</span>,
<a href="#48" id="48" class="l"> 48: </a>                <span class="php-quote">']'</span>,
<a href="#49" id="49" class="l"> 49: </a>                <span class="php-quote">':'</span>,
<a href="#50" id="50" class="l"> 50: </a>                <span class="php-quote">';'</span>,
<a href="#51" id="51" class="l"> 51: </a>                <span class="php-quote">'@'</span>,
<a href="#52" id="52" class="l"> 52: </a>                <span class="php-quote">','</span>,
<a href="#53" id="53" class="l"> 53: </a>                <span class="php-quote">'.'</span>,
<a href="#54" id="54" class="l"> 54: </a>                <span class="php-quote">'&quot;'</span>
<a href="#55" id="55" class="l"> 55: </a>        );
<a href="#56" id="56" class="l"> 56: </a>
<a href="#57" id="57" class="l"> 57: </a>        <span class="php-comment">/*** Refer to RFC 2822 for ABNF grammar ***/</span>
<a href="#58" id="58" class="l"> 58: </a>
<a href="#59" id="59" class="l"> 59: </a>        <span class="php-comment">//All basic building blocks</span>
<a href="#60" id="60" class="l"> 60: </a>        <span class="php-var">$this</span>-&gt;_grammar[<span class="php-quote">'NO-WS-CTL'</span>] = <span class="php-quote">'[\x01-\x08\x0B\x0C\x0E-\x19\x7F]'</span>;
<a href="#61" id="61" class="l"> 61: </a>        <span class="php-var">$this</span>-&gt;_grammar[<span class="php-quote">'WSP'</span>] = <span class="php-quote">'[ \t]'</span>;
<a href="#62" id="62" class="l"> 62: </a>        <span class="php-var">$this</span>-&gt;_grammar[<span class="php-quote">'CRLF'</span>] = <span class="php-quote">'(?:\r\n)'</span>;
<a href="#63" id="63" class="l"> 63: </a>        <span class="php-var">$this</span>-&gt;_grammar[<span class="php-quote">'FWS'</span>] = <span class="php-quote">'(?:(?:'</span> . <span class="php-var">$this</span>-&gt;_grammar[<span class="php-quote">'WSP'</span>] . <span class="php-quote">'*'</span>
<a href="#64" id="64" class="l"> 64: </a>                . <span class="php-var">$this</span>-&gt;_grammar[<span class="php-quote">'CRLF'</span>] . <span class="php-quote">')?'</span> . <span class="php-var">$this</span>-&gt;_grammar[<span class="php-quote">'WSP'</span>] . <span class="php-quote">')'</span>;
<a href="#65" id="65" class="l"> 65: </a>        <span class="php-var">$this</span>-&gt;_grammar[<span class="php-quote">'text'</span>] = <span class="php-quote">'[\x00-\x08\x0B\x0C\x0E-\x7F]'</span>;
<a href="#66" id="66" class="l"> 66: </a>        <span class="php-var">$this</span>-&gt;_grammar[<span class="php-quote">'quoted-pair'</span>] = <span class="php-quote">'(?:\\\\'</span> . <span class="php-var">$this</span>-&gt;_grammar[<span class="php-quote">'text'</span>]
<a href="#67" id="67" class="l"> 67: </a>                . <span class="php-quote">')'</span>;
<a href="#68" id="68" class="l"> 68: </a>        <span class="php-var">$this</span>-&gt;_grammar[<span class="php-quote">'ctext'</span>] = <span class="php-quote">'(?:'</span> . <span class="php-var">$this</span>-&gt;_grammar[<span class="php-quote">'NO-WS-CTL'</span>]
<a href="#69" id="69" class="l"> 69: </a>                . <span class="php-quote">'|[\x21-\x27\x2A-\x5B\x5D-\x7E])'</span>;
<a href="#70" id="70" class="l"> 70: </a>        <span class="php-comment">//Uses recursive PCRE (?1) -- could be a weak point??</span>
<a href="#71" id="71" class="l"> 71: </a>        <span class="php-var">$this</span>-&gt;_grammar[<span class="php-quote">'ccontent'</span>] = <span class="php-quote">'(?:'</span> . <span class="php-var">$this</span>-&gt;_grammar[<span class="php-quote">'ctext'</span>] . <span class="php-quote">'|'</span>
<a href="#72" id="72" class="l"> 72: </a>                . <span class="php-var">$this</span>-&gt;_grammar[<span class="php-quote">'quoted-pair'</span>] . <span class="php-quote">'|(?1))'</span>;
<a href="#73" id="73" class="l"> 73: </a>        <span class="php-var">$this</span>-&gt;_grammar[<span class="php-quote">'comment'</span>] = <span class="php-quote">'(\((?:'</span> . <span class="php-var">$this</span>-&gt;_grammar[<span class="php-quote">'FWS'</span>] . <span class="php-quote">'|'</span>
<a href="#74" id="74" class="l"> 74: </a>                . <span class="php-var">$this</span>-&gt;_grammar[<span class="php-quote">'ccontent'</span>] . <span class="php-quote">')*'</span> . <span class="php-var">$this</span>-&gt;_grammar[<span class="php-quote">'FWS'</span>]
<a href="#75" id="75" class="l"> 75: </a>                . <span class="php-quote">'?\))'</span>;
<a href="#76" id="76" class="l"> 76: </a>        <span class="php-var">$this</span>-&gt;_grammar[<span class="php-quote">'CFWS'</span>] = <span class="php-quote">'(?:(?:'</span> . <span class="php-var">$this</span>-&gt;_grammar[<span class="php-quote">'FWS'</span>] . <span class="php-quote">'?'</span>
<a href="#77" id="77" class="l"> 77: </a>                . <span class="php-var">$this</span>-&gt;_grammar[<span class="php-quote">'comment'</span>] . <span class="php-quote">')*(?:(?:'</span>
<a href="#78" id="78" class="l"> 78: </a>                . <span class="php-var">$this</span>-&gt;_grammar[<span class="php-quote">'FWS'</span>] . <span class="php-quote">'?'</span> . <span class="php-var">$this</span>-&gt;_grammar[<span class="php-quote">'comment'</span>]
<a href="#79" id="79" class="l"> 79: </a>                . <span class="php-quote">')|'</span> . <span class="php-var">$this</span>-&gt;_grammar[<span class="php-quote">'FWS'</span>] . <span class="php-quote">'))'</span>;
<a href="#80" id="80" class="l"> 80: </a>        <span class="php-var">$this</span>-&gt;_grammar[<span class="php-quote">'qtext'</span>] = <span class="php-quote">'(?:'</span> . <span class="php-var">$this</span>-&gt;_grammar[<span class="php-quote">'NO-WS-CTL'</span>]
<a href="#81" id="81" class="l"> 81: </a>                . <span class="php-quote">'|[\x21\x23-\x5B\x5D-\x7E])'</span>;
<a href="#82" id="82" class="l"> 82: </a>        <span class="php-var">$this</span>-&gt;_grammar[<span class="php-quote">'qcontent'</span>] = <span class="php-quote">'(?:'</span> . <span class="php-var">$this</span>-&gt;_grammar[<span class="php-quote">'qtext'</span>] . <span class="php-quote">'|'</span>
<a href="#83" id="83" class="l"> 83: </a>                . <span class="php-var">$this</span>-&gt;_grammar[<span class="php-quote">'quoted-pair'</span>] . <span class="php-quote">')'</span>;
<a href="#84" id="84" class="l"> 84: </a>        <span class="php-var">$this</span>-&gt;_grammar[<span class="php-quote">'quoted-string'</span>] = <span class="php-quote">'(?:'</span> . <span class="php-var">$this</span>-&gt;_grammar[<span class="php-quote">'CFWS'</span>]
<a href="#85" id="85" class="l"> 85: </a>                . <span class="php-quote">'?&quot;'</span> . <span class="php-quote">'('</span> . <span class="php-var">$this</span>-&gt;_grammar[<span class="php-quote">'FWS'</span>] . <span class="php-quote">'?'</span>
<a href="#86" id="86" class="l"> 86: </a>                . <span class="php-var">$this</span>-&gt;_grammar[<span class="php-quote">'qcontent'</span>] . <span class="php-quote">')*'</span> . <span class="php-var">$this</span>-&gt;_grammar[<span class="php-quote">'FWS'</span>]
<a href="#87" id="87" class="l"> 87: </a>                . <span class="php-quote">'?&quot;'</span> . <span class="php-var">$this</span>-&gt;_grammar[<span class="php-quote">'CFWS'</span>] . <span class="php-quote">'?)'</span>;
<a href="#88" id="88" class="l"> 88: </a>        <span class="php-var">$this</span>-&gt;_grammar[<span class="php-quote">'atext'</span>] = <span class="php-quote">'[a-zA-Z0-9!#\$%&amp;\'\*\+\-\/=\?\^_`\{\}\|~]'</span>;
<a href="#89" id="89" class="l"> 89: </a>        <span class="php-var">$this</span>-&gt;_grammar[<span class="php-quote">'atom'</span>] = <span class="php-quote">'(?:'</span> . <span class="php-var">$this</span>-&gt;_grammar[<span class="php-quote">'CFWS'</span>] . <span class="php-quote">'?'</span>
<a href="#90" id="90" class="l"> 90: </a>                . <span class="php-var">$this</span>-&gt;_grammar[<span class="php-quote">'atext'</span>] . <span class="php-quote">'+'</span> . <span class="php-var">$this</span>-&gt;_grammar[<span class="php-quote">'CFWS'</span>]
<a href="#91" id="91" class="l"> 91: </a>                . <span class="php-quote">'?)'</span>;
<a href="#92" id="92" class="l"> 92: </a>        <span class="php-var">$this</span>-&gt;_grammar[<span class="php-quote">'dot-atom-text'</span>] = <span class="php-quote">'(?:'</span> . <span class="php-var">$this</span>-&gt;_grammar[<span class="php-quote">'atext'</span>]
<a href="#93" id="93" class="l"> 93: </a>                . <span class="php-quote">'+'</span> . <span class="php-quote">'(\.'</span> . <span class="php-var">$this</span>-&gt;_grammar[<span class="php-quote">'atext'</span>] . <span class="php-quote">'+)*)'</span>;
<a href="#94" id="94" class="l"> 94: </a>        <span class="php-var">$this</span>-&gt;_grammar[<span class="php-quote">'dot-atom'</span>] = <span class="php-quote">'(?:'</span> . <span class="php-var">$this</span>-&gt;_grammar[<span class="php-quote">'CFWS'</span>] . <span class="php-quote">'?'</span>
<a href="#95" id="95" class="l"> 95: </a>                . <span class="php-var">$this</span>-&gt;_grammar[<span class="php-quote">'dot-atom-text'</span>] . <span class="php-quote">'+'</span>
<a href="#96" id="96" class="l"> 96: </a>                . <span class="php-var">$this</span>-&gt;_grammar[<span class="php-quote">'CFWS'</span>] . <span class="php-quote">'?)'</span>;
<a href="#97" id="97" class="l"> 97: </a>        <span class="php-var">$this</span>-&gt;_grammar[<span class="php-quote">'word'</span>] = <span class="php-quote">'(?:'</span> . <span class="php-var">$this</span>-&gt;_grammar[<span class="php-quote">'atom'</span>] . <span class="php-quote">'|'</span>
<a href="#98" id="98" class="l"> 98: </a>                . <span class="php-var">$this</span>-&gt;_grammar[<span class="php-quote">'quoted-string'</span>] . <span class="php-quote">')'</span>;
<a href="#99" id="99" class="l"> 99: </a>        <span class="php-var">$this</span>-&gt;_grammar[<span class="php-quote">'phrase'</span>] = <span class="php-quote">'(?:'</span> . <span class="php-var">$this</span>-&gt;_grammar[<span class="php-quote">'word'</span>] . <span class="php-quote">'+?)'</span>;
<a href="#100" id="100" class="l">100: </a>        <span class="php-var">$this</span>-&gt;_grammar[<span class="php-quote">'no-fold-quote'</span>] = <span class="php-quote">'(?:&quot;(?:'</span> . <span class="php-var">$this</span>-&gt;_grammar[<span class="php-quote">'qtext'</span>]
<a href="#101" id="101" class="l">101: </a>                . <span class="php-quote">'|'</span> . <span class="php-var">$this</span>-&gt;_grammar[<span class="php-quote">'quoted-pair'</span>] . <span class="php-quote">')*&quot;)'</span>;
<a href="#102" id="102" class="l">102: </a>        <span class="php-var">$this</span>-&gt;_grammar[<span class="php-quote">'dtext'</span>] = <span class="php-quote">'(?:'</span> . <span class="php-var">$this</span>-&gt;_grammar[<span class="php-quote">'NO-WS-CTL'</span>]
<a href="#103" id="103" class="l">103: </a>                . <span class="php-quote">'|[\x21-\x5A\x5E-\x7E])'</span>;
<a href="#104" id="104" class="l">104: </a>        <span class="php-var">$this</span>-&gt;_grammar[<span class="php-quote">'no-fold-literal'</span>] = <span class="php-quote">'(?:\[(?:'</span>
<a href="#105" id="105" class="l">105: </a>                . <span class="php-var">$this</span>-&gt;_grammar[<span class="php-quote">'dtext'</span>] . <span class="php-quote">'|'</span>
<a href="#106" id="106" class="l">106: </a>                . <span class="php-var">$this</span>-&gt;_grammar[<span class="php-quote">'quoted-pair'</span>] . <span class="php-quote">')*\])'</span>;
<a href="#107" id="107" class="l">107: </a>
<a href="#108" id="108" class="l">108: </a>        <span class="php-comment">//Message IDs</span>
<a href="#109" id="109" class="l">109: </a>        <span class="php-var">$this</span>-&gt;_grammar[<span class="php-quote">'id-left'</span>] = <span class="php-quote">'(?:'</span> . <span class="php-var">$this</span>-&gt;_grammar[<span class="php-quote">'dot-atom-text'</span>]
<a href="#110" id="110" class="l">110: </a>                . <span class="php-quote">'|'</span> . <span class="php-var">$this</span>-&gt;_grammar[<span class="php-quote">'no-fold-quote'</span>] . <span class="php-quote">')'</span>;
<a href="#111" id="111" class="l">111: </a>        <span class="php-var">$this</span>-&gt;_grammar[<span class="php-quote">'id-right'</span>] = <span class="php-quote">'(?:'</span> . <span class="php-var">$this</span>-&gt;_grammar[<span class="php-quote">'dot-atom-text'</span>]
<a href="#112" id="112" class="l">112: </a>                . <span class="php-quote">'|'</span> . <span class="php-var">$this</span>-&gt;_grammar[<span class="php-quote">'no-fold-literal'</span>] . <span class="php-quote">')'</span>;
<a href="#113" id="113" class="l">113: </a>
<a href="#114" id="114" class="l">114: </a>        <span class="php-comment">//Addresses, mailboxes and paths</span>
<a href="#115" id="115" class="l">115: </a>        <span class="php-var">$this</span>-&gt;_grammar[<span class="php-quote">'local-part'</span>] = <span class="php-quote">'(?:'</span> . <span class="php-var">$this</span>-&gt;_grammar[<span class="php-quote">'dot-atom'</span>]
<a href="#116" id="116" class="l">116: </a>                . <span class="php-quote">'|'</span> . <span class="php-var">$this</span>-&gt;_grammar[<span class="php-quote">'quoted-string'</span>] . <span class="php-quote">')'</span>;
<a href="#117" id="117" class="l">117: </a>        <span class="php-var">$this</span>-&gt;_grammar[<span class="php-quote">'dcontent'</span>] = <span class="php-quote">'(?:'</span> . <span class="php-var">$this</span>-&gt;_grammar[<span class="php-quote">'dtext'</span>] . <span class="php-quote">'|'</span>
<a href="#118" id="118" class="l">118: </a>                . <span class="php-var">$this</span>-&gt;_grammar[<span class="php-quote">'quoted-pair'</span>] . <span class="php-quote">')'</span>;
<a href="#119" id="119" class="l">119: </a>        <span class="php-var">$this</span>-&gt;_grammar[<span class="php-quote">'domain-literal'</span>] = <span class="php-quote">'(?:'</span> . <span class="php-var">$this</span>-&gt;_grammar[<span class="php-quote">'CFWS'</span>]
<a href="#120" id="120" class="l">120: </a>                . <span class="php-quote">'?\[('</span> . <span class="php-var">$this</span>-&gt;_grammar[<span class="php-quote">'FWS'</span>] . <span class="php-quote">'?'</span>
<a href="#121" id="121" class="l">121: </a>                . <span class="php-var">$this</span>-&gt;_grammar[<span class="php-quote">'dcontent'</span>] . <span class="php-quote">')*?'</span> . <span class="php-var">$this</span>-&gt;_grammar[<span class="php-quote">'FWS'</span>]
<a href="#122" id="122" class="l">122: </a>                . <span class="php-quote">'?\]'</span> . <span class="php-var">$this</span>-&gt;_grammar[<span class="php-quote">'CFWS'</span>] . <span class="php-quote">'?)'</span>;
<a href="#123" id="123" class="l">123: </a>        <span class="php-var">$this</span>-&gt;_grammar[<span class="php-quote">'domain'</span>] = <span class="php-quote">'(?:'</span> . <span class="php-var">$this</span>-&gt;_grammar[<span class="php-quote">'dot-atom'</span>] . <span class="php-quote">'|'</span>
<a href="#124" id="124" class="l">124: </a>                . <span class="php-var">$this</span>-&gt;_grammar[<span class="php-quote">'domain-literal'</span>] . <span class="php-quote">')'</span>;
<a href="#125" id="125" class="l">125: </a>        <span class="php-var">$this</span>-&gt;_grammar[<span class="php-quote">'addr-spec'</span>] = <span class="php-quote">'(?:'</span> . <span class="php-var">$this</span>-&gt;_grammar[<span class="php-quote">'local-part'</span>]
<a href="#126" id="126" class="l">126: </a>                . <span class="php-quote">'@'</span> . <span class="php-var">$this</span>-&gt;_grammar[<span class="php-quote">'domain'</span>] . <span class="php-quote">')'</span>;
<a href="#127" id="127" class="l">127: </a>    }
<a href="#128" id="128" class="l">128: </a>
<a href="#129" id="129" class="l">129: </a>    <span class="php-comment">/**
</span><a href="#130" id="130" class="l">130: </a><span class="php-comment">     * Get the grammar defined for $name token.
</span><a href="#131" id="131" class="l">131: </a><span class="php-comment">     * @param string $name execatly as written in the RFC
</span><a href="#132" id="132" class="l">132: </a><span class="php-comment">     * @return string
</span><a href="#133" id="133" class="l">133: </a><span class="php-comment">     */</span>
<a href="#134" id="134" class="l">134: </a>
<a href="#135" id="135" class="l">135: </a>    <span class="php-keyword1">public</span> <span class="php-keyword1">function</span> getDefinition(<span class="php-var">$name</span>)
<a href="#136" id="136" class="l">136: </a>    {
<a href="#137" id="137" class="l">137: </a>        <span class="php-keyword1">if</span> (<span class="php-keyword2">array_key_exists</span>(<span class="php-var">$name</span>, <span class="php-var">$this</span>-&gt;_grammar)) {
<a href="#138" id="138" class="l">138: </a>            <span class="php-keyword1">return</span> <span class="php-var">$this</span>-&gt;_grammar[<span class="php-var">$name</span>];
<a href="#139" id="139" class="l">139: </a>        } <span class="php-keyword1">else</span> {
<a href="#140" id="140" class="l">140: </a>            <span class="php-keyword1">throw</span> <span class="php-keyword1">new</span> Swift_RfcComplianceException(
<a href="#141" id="141" class="l">141: </a>                    <span class="php-quote">&quot;No such grammar '&quot;</span> . <span class="php-var">$name</span> . <span class="php-quote">&quot;' defined.&quot;</span>);
<a href="#142" id="142" class="l">142: </a>        }
<a href="#143" id="143" class="l">143: </a>    }
<a href="#144" id="144" class="l">144: </a>
<a href="#145" id="145" class="l">145: </a>    <span class="php-comment">/**
</span><a href="#146" id="146" class="l">146: </a><span class="php-comment">     * Returns the tokens defined in RFC 2822 (and some related RFCs).
</span><a href="#147" id="147" class="l">147: </a><span class="php-comment">     * @return array
</span><a href="#148" id="148" class="l">148: </a><span class="php-comment">     */</span>
<a href="#149" id="149" class="l">149: </a>
<a href="#150" id="150" class="l">150: </a>    <span class="php-keyword1">public</span> <span class="php-keyword1">function</span> getGrammarDefinitions()
<a href="#151" id="151" class="l">151: </a>    {
<a href="#152" id="152" class="l">152: </a>        <span class="php-keyword1">return</span> <span class="php-var">$this</span>-&gt;_grammar;
<a href="#153" id="153" class="l">153: </a>    }
<a href="#154" id="154" class="l">154: </a>
<a href="#155" id="155" class="l">155: </a>    <span class="php-comment">/**
</span><a href="#156" id="156" class="l">156: </a><span class="php-comment">     * Returns the current special characters used in the syntax which need to be escaped.
</span><a href="#157" id="157" class="l">157: </a><span class="php-comment">     * @return array
</span><a href="#158" id="158" class="l">158: </a><span class="php-comment">     */</span>
<a href="#159" id="159" class="l">159: </a>
<a href="#160" id="160" class="l">160: </a>    <span class="php-keyword1">public</span> <span class="php-keyword1">function</span> getSpecials()
<a href="#161" id="161" class="l">161: </a>    {
<a href="#162" id="162" class="l">162: </a>        <span class="php-keyword1">return</span> <span class="php-var">$this</span>-&gt;_specials;
<a href="#163" id="163" class="l">163: </a>    }
<a href="#164" id="164" class="l">164: </a>
<a href="#165" id="165" class="l">165: </a>    <span class="php-comment">/**
</span><a href="#166" id="166" class="l">166: </a><span class="php-comment">     * Escape special characters in a string (convert to quoted-pairs).
</span><a href="#167" id="167" class="l">167: </a><span class="php-comment">     * @param string $token
</span><a href="#168" id="168" class="l">168: </a><span class="php-comment">     * @param string[] $include additonal chars to escape
</span><a href="#169" id="169" class="l">169: </a><span class="php-comment">     * @param string[] $exclude chars from escaping
</span><a href="#170" id="170" class="l">170: </a><span class="php-comment">     * @return string
</span><a href="#171" id="171" class="l">171: </a><span class="php-comment">     */</span>
<a href="#172" id="172" class="l">172: </a>
<a href="#173" id="173" class="l">173: </a>    <span class="php-keyword1">public</span> <span class="php-keyword1">function</span> escapeSpecials(<span class="php-var">$token</span>, <span class="php-var">$include</span> = <span class="php-keyword1">array</span>(),
<a href="#174" id="174" class="l">174: </a>            <span class="php-var">$exclude</span> = <span class="php-keyword1">array</span>())
<a href="#175" id="175" class="l">175: </a>    {
<a href="#176" id="176" class="l">176: </a>        <span class="php-keyword1">foreach</span> (<span class="php-keyword2">array_merge</span>(
<a href="#177" id="177" class="l">177: </a>                <span class="php-keyword1">array</span>(
<a href="#178" id="178" class="l">178: </a>                        <span class="php-quote">'\\'</span>
<a href="#179" id="179" class="l">179: </a>                ), <span class="php-keyword2">array_diff</span>(<span class="php-var">$this</span>-&gt;_specials, <span class="php-var">$exclude</span>), <span class="php-var">$include</span>) <span class="php-keyword1">as</span> <span class="php-var">$char</span>) {
<a href="#180" id="180" class="l">180: </a>            <span class="php-var">$token</span> = <span class="php-keyword2">str_replace</span>(<span class="php-var">$char</span>, <span class="php-quote">'\\'</span> . <span class="php-var">$char</span>, <span class="php-var">$token</span>);
<a href="#181" id="181" class="l">181: </a>        }
<a href="#182" id="182" class="l">182: </a>        <span class="php-keyword1">return</span> <span class="php-var">$token</span>;
<a href="#183" id="183" class="l">183: </a>    }
<a href="#184" id="184" class="l">184: </a>}
<a href="#185" id="185" class="l">185: </a></code></pre>

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